Printing-machine.



No. 816,110. I I PATENTED MAR.27,1906.

' G. A. MAIN.

PRINTING MACHINE.

APPLICATION FILED JULY 11,1905.

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vev #5 y b wo 2 .7 I 01 aZZhQ//m.8mmIo- PATENTED MAR. 27, 1906.

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I @51 Pub Silvana e134 G. ARMAINQ PRINTING MACHINE. APPLICATION Him) JULY 11 1905 PATENTED MAR. 27,1906;

-G. 4'. MAIN. PRINTING MACHINE. APPLICATION FILED JULY 11.19Q5.

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I ameml'oz v a citizen (if the United states of America, and

a resident' of 1rred,"A11 g n State 1"- 1 .'|-:n. of New York, h ve nvented certain new and useful ilinprovem nts hinting-Machines, ofrwhic'h 'th'e" following is aspecific ation.

The presentinvention relates generally to means for converting "rotary motion into a re ciprocating' noti on', and has more particularly reference to meansfor reciprocating and reversing the bed motion'of a-bed and cylinderprinting machinef In the art many devices have been con-- structed for efl'ecting'jthe "reciprocation and the raversabre bed'printin -machine, some of which have employed t e' well known crank motion. f Whenthis is used, the bed is usually given. a constantly-changing Y speed, varying with'the speed imparted by the crank.

Inasmuchas thexcylinderand bed have to move at the sa'mesurface speed it is either necessary to vary the speed'of the cylinder to correspond :to that of the bed or top'rovide means whereby the varying speed of the crank will be} converted into a uniform motion during the maj or reciprocation of. the bed.

The object of the present invention is to utilize the simplicity of the crank motion in such a manner that the bed will be given a uniform speed during the'maj or portion of its travel.

To thisend the inventionconsists, essentially, an auxiliary oscillating and reciproeating, crank" preferably in the formof a ear havin, ""a pin eccentrically disposed whic is adapted todrive thegb'ed either by engaging directly with" the "rack on the same or through I a train of ears; a main driving-crank making one comp eterevolutlon toeach complete r'e- I ciprocation and oscillation of the sa d gear,

the auxiliary crank being properlyproportioned with relation to the In "-111 crank and so arranged as to form an effective are of substantially uniform motion during the major and provided'with one or more guides or slots at one end 'adaptedto engage'wlth the pm or pinson the auxiliary crank.

r' awings there is distogether" withseveral "modi cations of the vertica PatentedMm-ch 27,1905.

widely varied without departing from it.

specific embodiment of the invention may be.

PATENT OFFICE i i I new m, ()FQIALEREDIQ, NEW YORK. j "a '1 a PRiNriNG-M AQHm5.

In the'said drawin s, Figure 1 represents a side elevation of a be and cylinder press embodylngthe invention and s they are about to start. Fig. 2 is a detail vlew showmg the arts in the position at the beginning'ofsth'e e ective arc of the auxiliary crank or at the beginning of the uniform major reciprocation. Fi 3 shows the parts at a point Where the auxilla crank has made one-half of its movement 1n one direction.

Fig. is an end view looking in the direction of the arrow; in Fig.3. Fig. 5 shows a modiowing the parts 1n their 1n1t1al p'os1t1on or at the point when" fication with the arts inthe same position'a's- I those in Fig. 1. ig. 6 shows the position'of these parts corresponding to the position of Fig. 2. Fig. 7 shows the position of the parts correspondlng to Fig". 3. Figs. 8 and 9 show modifications of the structure disclosed in Figs. 1 to 4. Fig." 10 is an end view looking in the direction of the arrow 10 of Fig. 9. Figs. 11 and 12 show the main driving-crank rotating in a horizontal plane instead of in a plane. 7 Similar numerals of reference indicate corresponding parts in the different views; 1 indicates a framework of any suitable construction for properly mounting the parts of the device, and 2 is the impression-cylinder of any usual or suitable construction, while 3 indicates the reci rocating bed. Mounted on'the shaft 4, whic may carry the gear 5 for imparting motion to-the impres--' sion-cylinder is the main driving-crank 6-, provided at its outer end with the guidelock 7, adapted to move in the guide 8 of the reciprocating yoke 9. This yoke is adapted to'slide in suitable Ways,' as 10 and 11, and

carries at its other end another guide 12, in

which plays the guide-block 13. of the crankpin 14, which in this instance is mounted eccentrica-lly on the oscillating and reciprocatzing gear 15, which gear is suitably supported "as'it reciprocates by means of the lower stationary rack 16 and bearers adjacent to the same in'a well-known manner, andimparts its motion to the upper reciprocating rack 17 direct in the resent instance. -This shows the simplest f drm of the invention, and the operation can best be explained by consider- 7 ing this, construction alone. I .As will be noticed, the auxiliary crank formed by pin 14 on the'gear 15 is much shorter than the crank 6, and while the main driving-crank travels from the position shown in Fig. 1 to the position shown in Fig. 2 the auxiliary crank will have traveled a distance to" the left and will have turned a distance 5 .sufficient to bring the block 13 from the bottom of the guide 12 up to the position shown in Fig. 2, in which its center is substantially in horizontal alinement with the center of the gear 15. During this movement the speed of the auxiliary crank will be gradually accelerated and will have reached its maximum when it arrives at the position shown in Fig. 2. The continued rotation of the main crank will cause the auxiliary crank to travel I 5 through an arc of one hundred and eighty de- 2 The auxiliary crank will travel a distance beyond this point, in fact, to a point opposite to that shown in Fig. 1, during which its speed will be gradually retarded to zero. During this movement the main crank will have trav- 2 5 eled from the position shown in Fig. l through one hundred and eighty degrees, and the continued movement of the same will gradually accelerate the motion of the auxiliary crank in the opposite direction until it reaches a po- 3 sition in horizontal alinement with the cen- 'ter of the crank, when the full speed will be attained again.

It will be understood that while the auxiliary crank travels through the short are at the end of its uniform movement in opposite directions that the speed of the bed will be gradually retarded and accelerated again, or, in other words, will be reversed, and that during its travel of one hundred and eighty 4 degrees in either direction it will move at a substantially uniform speed to impart the major reciprocation to the bed. .Thus during one complete rotation of the main crank through three hundred and sixty degrees the auxiliary crank will have oscillated in opposite directions through an are somewhat longer than one hundred and eighty degrees in both directions and will have reciprocated a distance equal to exactly one-half the travel of the bed. It will be understood-that by varying the diameter of the traveling gear 15 and the relative length of the auxiliary crank and otherwise properly proportioning the parts the length of time used for the reversal and L'forthe uniform travel of the bed can be changed. In order to avoid cramping of'the arts, the reciprocating yoke 9 will generally beforked at the end adjacent to the auxiliary i crank with guides in each fork, and the auxo iliary crank will then be provided with a Crank-pin and guide-block on either side, as shown in Fig. 4:.

Referring-now to Figs. 5, 6, and 7, it Will be seen that in this instance the yoke is provided ,5 with a plurality of vertical slots open at the lower end, as 18, 19, and 20, and that the gear 21 is providedwith two eccentricallydisposed pins 22 and 23, which progressively engage and disengage with the open slots. In this instance the substantiallv uniform travel of the bed will take place from the time the pm 23 enters into engagement with the centralslot 19 until it is disengaged from the same and'that the periods of" reversal take place when the pin 22 engages with the two end slotslS andZO. In this instance, as in the construction shown in Figs. 1, 2, 3, and 4, the arrangement may be double, with crankpins on either side of the auxiliary crank.

In Fig. 8 is shown a construction in which there is mounted concentrically with the gear 2O a larger gear 21, with which engages the rack on the type-bed, while in Fig. 9 the gear 22 engages with a reciprocating rack 23, with which travels the gear 24, meshing with the stationary rack 25 and imparting the motion to the rack 26 on the type-bed.

In Figs. 11 and 12 the main crank is shown as rotating in a horizontal plane instead of in a vertical plane, as in the other views. In Fig 11 are shown two beveled gears 27 and 28, the latter carrying the crank 29, sliding in the yoke 30, while in Fig. 12 a worm and a wormgear 31 and 32 are shown, the said worm-gear carrying a crank 33, sliding in the yoke 34. The operation of these modifications is substantially similar to that stated in connection with the construction shown in Figs. 1.to 4.

What is claimed is 1. The combination of a main rotating crank, an auxiliary crank provided with a crank-pin and having an oscillating and reciprocating motion, and a reciprocating member actuated by the main rotating crank and having at one end a guide for the reception of the pin on the auxiiiary crank.

2. The combination of a main rotating crank, an auxiliary crank having an oscillating and a reciprocating motion, and provided with a crank -pin, a reeiprm-ating member actuated by the main rotating crank, and having at one end a guide for the reception of the pin on the auxiliary crank, whereby during the complete revolution of the main crank, the auxiliary crank makes a complete oscillating and reciprocating movement with an effective are of substantially uniform speed during the major portion of its travel in both directions. I

3. The combination of a 'main rotating crank, having a crank-pin, an auxiliary crank having an oscillating and reciprocating motion, also provided with a crank-pin, and a reciprocating member having guides for the reception of the crank-pins.

4. The combination of a main rotating crank, having a crank-pin, an auxiliary crank having an oscillating and reciprocating motion, also provided with a crank-pin, and a reciprocating member having uides for the reception of the crank-pins, W ereby during v a complete revolution of'the main crank the auxiliary crank makes a complete oscillating and reciprocatin movement with aneffective arc of substantia 1y uniform s eed during the major portion of its travel in oth directions.

-5. The combination. of "a main rotating crank havinga crank-pin, an auxiliary crank, having an oscillating and reciprocating mo- -tion,-provided with two crank-pins, and a replurality of; guides for the ciprocating memben'having a guide for the crank-pin on the maincrank and having'a two crank-pins on the auxiliary crank.

'6; The combination of a main rotating crank having a crank-pin, an auxiliary crank having an oscillating and reciprocating motion, provided with two crank-pins, and a reciprocating member having a 'guidefor the crank-pin onl-the main crank, and having a plurality of guides for the two crank-pins on ,plete revolution of the main crank, 'theau'xiL- v2 5 the auxiliary crank, wherebyduringa comiary crank makes a complete os'cillatingand reciprocating movement with an efiective arc-of substantially uniform'speed during the major portion of its traveli in both directions.

7". I In a'printinglmachine :the combination of a reciprocating bed, a main rotating crank,

having a crank-pin, an oscillating and reciprocating gear adaptedv to impart motion toi the reciprocating. bed, provided with a c'rank pin,"and a reciprocating member having guides ior the reception ofi the crank-pins of otating crankand 01 the gear. V j

.In a printing-machine: the combination feciprocating bed, a mainrotating crank having-a crank-pin, ian'oscillating and recip- 1.49

rocatingg'ear, adapted-to impartjmotion to.

{the reciprocating bed, provided with a crankpin' so disposed that during a complete revo-v ution of the main crank, the gear makes a vcomplete oscillating and reciprocating movement with an effective are of substantially uniform speed during the "major portion of its travelin both directions, and a reciproeating member havin-g'guid'es for the reception of the crank-pins on the main. crank and on the gear.

9.--The combination. of a'main rotating' 3 cra'nk having a crank-pin, an, auxiliary cran having an oscillating and reciprocating motion provided a crank-pin onboth s des,

and a reciprocating member having a guidefor the reception of the crank-pin on the main crank, and forkedat' the end adjacent to the auxiliary crank with guides in each fork for the reception of the crank-pinsof the auxiliary crank.

.10. In a printing-machine, the combina tion 'of a reciprocating bed, a main rotating 'crank, an oscillating and reciprocating gear vada ted, to impart motion to the reciprocat ing ed provided with a crankpi'n', and a reciprocating member actuated by the main rotating crank and having a uide at one end for the reception of the cran -pin of the gear.

'11. In .a printing-machine, the combinationflof' a reciprocating bed, amain rotatingcrank, an oscillating and reciprocating gear adapted to'impart motion to the reciprocating bed provided with a crank-pin so. disposed that during a complete revolution of the main crank the gear makes a complete oscillating and reciprocatingrnovement with plurality of crank-pins having an oscillating and reciprocating motion, an'da reciprocating member actuated by. the main rotating crank and having at one end a plurality of open slots which the' crank-pins on the auxiliary crank-progressively engage and diseni a c 13. In a-printing-machme, the combination ofa reciprocating bed, a main rotatmg crank, an oscillating andreciprocatmg gear adapted to im artmotion to the reciprocate ing bed provi ed with a plurality of crankins, and a reciprocating member actuated E 'rovided at one-end with a plurality of open s ots which the crank-- y the main crank and pins on the gear progressively engage and disenage.

'igned at Omaha, Nebraska, thls 2d: day of June,'-1' 905.

GEORGE ARTHUR MAIN. -Witnesses:

L. BRIN,

. A; T. KLoPP. 

